10.2.3 Can you answer these questions?

10.2.3.1 Two-directional vibration of EulerBernoulli beam with Lagrange multiplier
10.2.3.2 Are two matrices that look the same in matrix representation actually different?
10.2.3.3 What's the difference between Mathematica 14 and Wolfram Alpha Notebook 14
10.2.3.1 Two-directional vibration of EulerBernoulli beam with Lagrange multiplier

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=296584

Background 
I'm going to investigate a beam-pendulum coupling system (in this question I won't consider the pendulum though), that is, a spherical pendulum is suspended on the tip of a cantilever beam. ... 
[differential-equations] [constraint] [finite-difference-method] [lagrange-multiplier]
 
asked by rnotlnglgq https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=79138 Score of 1
10.2.3.2 Are two matrices that look the same in matrix representation actually different?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=296514

... 
[matrix]
 
asked by 000 666 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=96264 Score of 1
10.2.3.3 What's the difference between Mathematica 14 and Wolfram Alpha Notebook 14

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=296308

A version of my question was asked in 2019 (What is the difference between Mathematica and WolframAlpha Notebook Edition?) with no clear answer then.  Is there anything new that that addresses this?  ... 
[replacement]
 
asked by crabtree https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=82431 Score of 1